I will attempt a little assistance- it's been several decades! I was never involved in initial assembly so I don't know about bleeding. I did service a couple of Oliver plows with the same accumulator. With the system hooked to the tractor, if I remember correctly, you move the lever to send oil into the system, watching the gauge carefully, it will rise quickly, then hesitate briefly, before continuing it's rise. That point tells you how much nitrogen pressure is in the tank. You can repeat that process as many times as necessary to get the reading. I don't remember how far beyond gas pressure you set the hydraulic pressure. Seems like there was a little wiggle room, but basically the gas pressure is the key to the system. The system is self operating- totally unhooked from the tractor during operation. Of course with the proper equipment you can read the gas pressure at the schrader valve. Here you can take the accumulator to a welding supply place and they will charge it with nitrogen. There are more and more accumulators being used today so possibly dealers are charging them also. Hopefully someone with much more thorough and recent experience will respond. Best of luck.
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Today's Featured Article - Restoration Story: 1929 McCormick-Deering 10-20 - by Randal Simmon. On July 4th 1998 my dad and I was sitting on the front porch when he said that he was going to sell his two 10-20's to a junk man. He said that the junk man was going to give him $500 for both of them but he hadn't received the money for them yet. So I went into the house and wrote him a check for $500 and bought them myself and said now they are mine. He had bought them about five years before thinking that he was going to restore them himself. After five years sitting in the barn, he changed h
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